Source : Webster's Revised Unabridged Dictionary (1913)

Second \Sec"ond\, v. t. [imp. & p. p. {Seconded}; p. pr. & vb.
   n. {Seconding}.] [Cf. F. seconder, L. secundare, from
   secundus. See {Second}, a.]
   1. To follow in the next place; to succeed; to alternate.
      [R.]

            In the method of nature, a low valley is immediately
            seconded with an ambitious hill.      --Fuller.

            Sin is seconded with sin.             --South.

   2. To follow or attend for the purpose of assisting; to
      support; to back; to act as the second of; to assist; to
      forward; to encourage.

            We have supplies to second our attempt. --Shak.

            In human works though labored on with pain, A
            thousand movements scarce one purpose gain; In
            God's, one single can its end produce, Yet serves to
            second too some other use.            --Pope.

   3. Specifically, to support, as a motion or proposal, by
      adding one's voice to that of the mover or proposer.